MAC Group Ltd provides superior concrete repair and reinforcement solutions that bring back structural strength and prolong asset life in tough conditions. Our approach merges established repair techniques with advanced materials science to deliver solutions capable of enduring hostile conditions from coastal salt spray to industrial chemical exposure.

Precision Repair Techniques

Our team uses a collection of recognised industry techniques which are customised according to both the origin and severity of each structural flaw.

• Patch Repairs: Replace degraded concrete with polymer-modified mortars that deliver original strength and prevent shrinkage.
• Crack Injection: Pressure-driven injection of epoxy or polyurethane resins seals cracks and restores structural integrity while preventing water penetration.
• Cathodic Protection: Halt chloride-induced corrosion on bridges through the installation of sacrificial anodes or impressed current systems.
• Corrosion Inhibitors: Introduce migrating inhibitors into concrete which then build protective layers around embedded steel reinforcement.

Advanced Structural Strengthening

For load-bearing deficiencies, we implement:

• FRP (Fiber-Reinforced Polymer) Laminates: Lightweight carbon fiber sheets bonded to surfaces lead to increased flexural strength while keeping mass addition minimal.
• Steel Plate Bonding: Steel plates attached with epoxy improve shear resistance of beams and columns making them perfect for seismic strengthening applications.

Rigorous Methodology

The Concrete Society Technical Report 69 framework guides all our projects.

• Investigation: Deterioration mechanisms evaluation through coring analysis, half-cell potential testing and carbonation depth measurement.
• Preparation: The surface cleanliness standard ISO 8501-1 SA2.5 is achieved through grit blasting, hydro-demolition, or mechanical scabbling processes.
• Repair: We use cementitious mortars like micro-concrete as well as epoxy-based repair materials which deliver compressive strengths exceeding 50 MPa.
• Protection: Silane siloxane coatings and anti-carbonation membranes serve as protective seals against upcoming environmental damage.

Operational & Commercial Benefits

We minimise downtime through:

• Phased Works: Critical infrastructure such as hospitals and transport hubs benefit from repair work done during off-peak times.
• Rapid-Cure Materials: Two-part mortars reach 80% strength after just 24 hours.
• Preventive Strategies: Quick measures prevent total reconstruction needs from catastrophic failures.

Our engineered repair solutions surpass original specifications which results in service life extensions of over 20 years. Our solutions achieve NHSS 8A and EN 1504 standards through the integration of NDT validation methods with certified materials and SSABP accreditation.

MAC Group Ltd delivers durable repair solutions that are both cost-effective and protective of assets and stakeholders for car parks, marine structures, and heritage buildings.